Pressure-test apparatus



Nov. 6,1928. 1,690,713

- w. J. BOYLE, JR

I PRES SURE] TEST APPARATUS Filed April 25, 1927 2 Sheets-Sheet 1 jnua'fltar. Willis. .7 Bqyle]:

Nov. 6, 1928.

Filed April 25, 1927 W. J. BOYLE, JR PRESSURE TEST APPARATUS 2 Sheets-Sheet 2 3 30 40 2f 38 a" I, lf

4 Inventor Mil/1L2 J Bayte. .7}:

FORNIA.

TES'

WILLIS J'. BOYLE, JR., OF LOS ANGELES CA DURING COMPANY, OF LOS ANGELES,

PATENT. ()FFICE.

LIFORNIA, Assienon T0 BOYLE MA UFAC- cliiiiroaivra, VA cone cannon or CALI- PRESSURE-TEST APPARATUS.

Application filed April 1927. Serial No. 186,312

This invention has relation tothe art of testing containers under pressure; the ob ect of the invention isto provide a s1mple and effective device for applying test pressure to a container.

Although the invention is applicable wherever pressure testing is carried on, and applicable to pressure holding'containers of any type, the device i s particularly useful where largenumbers of containers are tested one characteristic feature of the devlce belng its quick and easy application to the container and the equally quick and easy application of pressure by a simple operation of the device itself. These matters are of some importance where large numbers of containers are being manufactured and tested. For instance, in the manufacture of metallic barrels or casks it is necessary that the finished article be pressure tested to determine that joints andseams are. tight; and it isdesirable that the pressure test device be quickly and easily applicable, that pressure canbe quickly and eifectively applied to the container, and that the device be easily removable from the container after the test is completed.

Containers of the kind above spoken of are usually provided with a bungor similar hole usually a screw-threaded hole adapted to take a plug. My device is so constructed that one part of it, equipped with an expansive gasket, may be placed in the hole; then by a simple movement of the control handle or lever the expansive gasket is expanded into pressure-tight engagement with the walls of the hole and at the sametime the valve is opened to admit pressure to the interior of the container. hen the test is completed a reverse movement of the handle contracts the gasket to allow easy removal of the device and simultaneously closes the pressure valve'to prevent escape of pressure fluid when the device is not in use.

form of device embodying the invention will thus be best understood from the following specific description, reference for this pur pose being had to the accompanying drawings in which:

Fig. 1 is an elevation showing the application of the pressure testing device to a barrel;

quickly and The preferred details of an illustrative Fig. 2 is an enlarged side elevation of the device itself; l I V Fig.8 is a plan of the same;

Fig. t is a section on line H of Fig. 2.

Fig.- 5 is a longitudinal section on line 5 5 ofFigfi; Figures 2 to 5 showing the device inwhat may be termed its inoperative position; and

. Fig. 6 is a section similar to that of Fig. 5 but showing the device in its operativeposition with the gasket expanded and the pressure valve open.

In the drawings having ahollow'body 10, somewhat cylindric in form. Depending from this'hollow body is a nipple 11 surrounded by a conical gasket member 12 composed of any suitable expan- .ketmember 12 rests upon an adjustable nut 13 screw-threaded ontothe lower end of nipple 11. A washer let rests on top of gasket 12 and this washer may be pressed down by the action of two cam members 15 to which handle 16 is connected. In fact, in the specific form herein shown, the two cam members 15 are made integral with the two members 16 of the handle. The two cams 15 are journalled upon two cylindric flanges 17 which project from opposite ends of body 10,'one of these flanges 17 also serving as the housing for a packing gland, hereinafter referred to. The two parallel handle members 16 are spacedly connected together by a bolt 18 and a spacer 19. I

From an inspection of the drawings it will be seen that when handle 16 is thrown from the position of Fig. 5 to that of Fig. 6 the gasket 12 is compressed longitudinally and expanded radially. In the position of Fig.

5 the gasket 12 may readily be inserted in the barrel fitting 20; and then by throwing .1

tion'of Fig. '6. Thepreferred arrangement and mechanism for operating the valve will now be described.

A shaft 30 is journalled in the end wall 10 of the hollow cylindrical body 10 and ,to the handle by bolt "18. The shaft 30' therefore turns with the handle. Inside hollowbody -this'shaft has an eccentric or crank pin to which a small valve Opel ating' rod 36 is connected. This rod extends out through the pressure inlet -nippl'e'37 and is provided with guide pins 38 so that the 'rodis guided substantial-1ycentrally of the pressure inlet nipple. At its outer end rod 36 carries the valve-25, 'th'e valve being in the iornro'f a simple compression stopper which seatson theen-d offthenipple 37 when the 'parts'are in the position of Fig. 5.

Adjustable nuts 25 behind the valve enable itsuposition to be adjustetl' foi propfer operatron. The relative position 'OfClflIiklPlIl 35 is such that When parts are in the position of Fig. 5-thevalve'25 is thrown to itsclosed I *bmation of a hollow pressure receiving body having an i outlet nipple depen'dingrfrom. its

position; While in theposition'of 6 the valve'is' turned to itsopen position.

A-pressure-hose :40 is connected WitlI'PIQS- 1 sure inlet nippleffl through the medium of a *fitti-ngl =which is-sereW-threaded ontothe outside at nipple37'. 7

The operation and use of- -the'deviceivill be apparent from the foregoing description of its structure. The operatorcan carry p the device handily by the handle 16. 1+Ioldn the handle in the relativeposition of the Washer "down and compresshthe gasket upon rotation of the ihandle, about thebody, "-acr'ank shaftfjournalled in thebodyand ex -tending througheone of its walls,uthe iinner Fig, 5 he applies the device to" the container bv' imply inserting gasket 12 in the holeof' fitting 2'0, and by throvv-ingthe handlefrom position'ofFig. 5 to thep'osition of- Fig.

6. 1n 'the position of Fig. 6the fluid under pressure isadniitted to the '-conta1ner and cannot leak out past gasket 12; WVhen the test is'completedit is only necessary to throw handle 16 back to thep'os ition-of Fig'ifi-and f remove the device; i I

f I claim:

, 1. In a pressure testing device, thecomj bination of a hollow body having a pressure j inlet opening and a pressure outletope111ng,

an external and expansible'gasket associated with one opening and adapted to beinser'ted in an aperture'oi the article to be tested, a

'valve'associated with the otheropenin g, an operating handle mounted on the'body, and v fconn'ectwe means Whe'reby'n'iovement of the 2. In a. pressure testing device, the com- -blI12Ll3lO11 of a hollow-pressure receiving body,

an outlet nippleextendingfrom the body, a

"longitudinally compressible ,andjradia'lly expa-nsible gasket around-the outlet nipple, a

handle rotatably mounted upon the body, a

cam connected with the handle and adapted ,upon movementiofthe handle to press longitudinally upon the gasket to compress it longitu dinally an'c l expand it -,radial'ly-, an inlet nippleextending from the body, acrank shat't extending into the body "from the outside,-'a' connecting rod connected :to the. crank shaft Within the body, a valve mounted upon the connecting rod and adapted to closckand openuthe passage through the, inlet'nipple,

and H IHQIH'lDQF connected to"the han'dleand i said crankshaft to "cause rotationcof the "-shatt upon rotation of thehandlel In a pressure testing device, the com I lower side and an inlet ni le extendin V b #310111 a clateral :side, a bifurcated handle rotatably mounted upon the body and provided with a pairof cams. one locatedvat each end of said crank shaft having-a valve operating cran'ln a connecting rod connectediw th usaid crank, avalve stopper mounted on said connecting rod and adapted to close andopen. v

the passage through the inlet nipple, :a"packinggland on thebody throughwhiehsaid, I crank shaft extends .outwardly, the outer) end of shaft being squared, and-a member attached to and mounted uponpthe handle and engaging the squared; end of :sa d shaft "to cause said: shaft to rotate withfthe handle. In Witness that: I claim ,thekforego-ing I have hereunto subscribedimynzame this 14th day of'Aprilr1927. V I

1W1LLrs1Jl'BorLn'iJ1-t 

